A pet hate of mine is hydraulic power units in which the pump has to ‘lift’ the oil into its intake. In other words, mounting the pump above the tank or more precisely, above minimum oil level. Like a suction strainer, it’s another ‘engineered in’ barrier which prevents the pump’s chambers from filling freely and completely.
According to most manufacturers, … Read more
In my series of weekly hydraulics bulletins that go out to anyone who opts in to receive them, there are two messages that always provoke a response.
The first of these two bulletins sets out to explain how a double-acting cylinder becomes a displacement cylinder when the piston seal leaks and the load is acting to retract the piston rod. … Read more
The price of oil sure is defying gravity at the moment. But unless you’re the owner of a lot of poorly maintained (read: leaky) hydraulic equipment, the price of gas and diesel is likely hurting your wallet more than the price of hydraulic oil. Regardless, you sure don’t want to be shelling out for any more of it than you … Read more